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Discussion Starter #1 (Edited)
Hi friends , facing Ac issues for my 2010 Acadia, replaced compressor 2 times On last one year but for past few months it was running without much issues other than frequent hissing sounds, as many of them stated in this forum for same issue . Now Cooling again dropped and willing to rectify.

1) what is the PSI maximum for refilling - To make sure the mechanic is filling the right qty of gas. Temporarily willing to top up the gas but need a permanent solution for this

2) only reason for hissing Sound is gas leak ? If gas leak is the reason how it lasted for around 6 to 7 months from my last compressor change. ? I want to rectify the same but please advise what all things tobe asked to change/ checked since I am have very limited knowledge in this Feild
 
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